Bond lengths

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Andrea_Torres
Posts: 98
Joined: Sun Sep 15, 2019 12:15 am

Bond lengths

Postby Andrea_Torres » Sat Oct 26, 2019 9:50 pm

Is there a way to find the bond lengths?

Matthew ILG 1L
Posts: 112
Joined: Sat Aug 17, 2019 12:15 am

Re: Bond lengths

Postby Matthew ILG 1L » Sat Oct 26, 2019 11:27 pm

Bonds lengths are measured in angstroms, the stronger the bond, the shorter the lengths. The length will be given to us I believe, as was the case in Wednesday's lecture when the Dr. Lavelle stated in a slide "Observed N--O bond length in (NO3)- = 1.24 Angstroms. "

IScarvie 1E
Posts: 66
Joined: Sat Aug 17, 2019 12:16 am

Re: Bond lengths

Postby IScarvie 1E » Sun Oct 27, 2019 9:45 am

I believe he said in our lecture on Friday that we don't need to know how to find the bond lengths in this class, just that double bonds are shorter than single bonds between the same two elements, and bonds in resonant structures are between those two lengths.

Kehlin Hayes 4C
Posts: 50
Joined: Wed Sep 18, 2019 12:17 am

Re: Bond lengths

Postby Kehlin Hayes 4C » Sun Oct 27, 2019 9:46 am

We don't have to find any bond lengths, they are usually provided in Angstroms that can also specify whether it is a single bond or a double bond.

Ada Chung 1C
Posts: 55
Joined: Sat Aug 17, 2019 12:15 am

Re: Bond lengths

Postby Ada Chung 1C » Sun Oct 27, 2019 9:49 am

In general, we just need to know that double bonds and triple bonds are shorter than single bonds. Because the forces of double bonds and triple bonds are stronger as a result of more electrons atoms will be pulled closer together leading to shorter bond lengths. Overall, I think you wouldn't need to know the exact bond length just the relationship between double bonds and single bonds and the reasoning behind it.

Nare Nazaryan 1F
Posts: 101
Joined: Fri Aug 09, 2019 12:17 am

Re: Bond lengths

Postby Nare Nazaryan 1F » Sun Oct 27, 2019 1:35 pm

We don't need to know how to find bond lengths; it would be given (in angstroms). Conceptually, we need to know that double bonds are shorter than single bonds.


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